AnsweredAssumed Answered

LS1043A QSPI Interface

Question asked by Julien Cavallo on Jan 16, 2020
Latest reply on Jan 17, 2020 by Julien Cavallo

Dear Sir,

 

I develop a custom board with LS1043A CPU.

 

I would like to use the QSPI memory interface for booting device.

 

 I have somes questions about QSPI memory interface of the LS1043A CPU.

 

1) What is the QSPI memory space limitation in MBytes for the LS1043A CPU ? In the "QorIQ LS1043A Reference Manual" on page 178 System memory map show 512 MB for QuadSPI. 512MB it is the limitation of the entire QSPI space memory ?

 

2) Stacked QSPI device (two 512Mb die) like the MT25QU01GBBB8E12-0AAT from Micron can work with the LS1043A QSPI Interface ? Because The CPU has two chip select signals, QSPI_A_CS0 (chip select for the first die) and QSPI_A_CS1 (chip select for the second die) and the QSPI MT25QU01GBBB8E12-0AAT memory has only one chip select signal. 

 

3) If i use the QSPI MT25QU01GBBB8E12-0AAT connected with only one chip select signal (QSPI_A_CS0 signal), can i use the entire QSPI memory space 1Gb or also the first 512Mb die ?  

 

Thank is you in advance for your reply.

 

Best regards.

Outcomes